https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83758
--- Comment #13 from acsawdey at gcc dot gnu.org --- one more interesting piece ... Copying gcc/libbackend.a and gcc/*.o from willow2 (working build) to genoa and linking go1 does not result in a working go1 binary. But, also copying over libiberty.a libbacktrace.a libdecnumber.a libcpp.a libcommon-target.a and libcommon.a and then linking does result in a working go1.
